30/18=n/21

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Solution for 30/18=n/21 equation: 


n in (-oo:+oo)

30/18 = n/21 // - n/21

30/18-(n/21) = 0

5/3-1/21*n = 0 // - 5/3

-1/21*n = -5/3 // : -1/21

n = -5/3/(-1/21)

n = 35

n = 35

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